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Source Naturals, N-Acetyl L-Tyrosine, 300 mg, 120 Tablets

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In Stock
  • Expiration Date: Mar 2020
  • Shipping Weight: 0.24 lbs
  • Product Code: SNS-00217
  • UPC Code: 021078002178
  • Package Quantity: 120 Tablets
  • Dimensions: 3.5 x 2 x 2 in, 0.2 lbs
Product Overview


  • Dietary Supplement

N-Acetyl L-Tyrosine is a more rapidly absorbed and bioavailable form of the amino acid L-tyrosine, and is less prone to urinary excretion.

L-Tyrosine is converted in the body to key biologic compounds, including epinephrine, dopamine, L-dopa, CoQ10, thyroid hormones, and melanin. The B vitamins pyridoxine (B-6) and folic acid are provided to assist in the conversion process.

Suggested Use

1 tablet daily

Other Ingredients

Sorbitol, stearic acid, magnesium stearate, modified cellulose gum and colloidal silicon dioxide.

Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, starch, salt, preservatives or artificial color, flavor or fragrance.


Contains tyrosine. Not to be used with MAO inhibitor drugs. If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.

Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children.

Supplement Facts
Serving Size: 1 Tablet
  Amount Per Serving %DV
Vitamin B-6 (as pyridoxine HCl) 25 mg 1,250%
Folate (as folic acid) 400 mcg 100%
N-Acetyl L-Tyrosine 300 mg
†Daily Value not established
iHerb Customer Reviews

Not happy

Posted by danarm on Dec 01, 2012

In theory this is a better version of l-thyrosine. In practice, it doesn't have the same energy, mood and motivation effects on me. I also don't like that the pills are sour and acidic. I will stick to the plain l-thyrosine that I know and love.

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Excellent Source of Tyrosine

Posted by Reviewer2431097 on Feb 26, 2012

Best absorbtion of Tyrosine I have tried. Great absorbtion makes up for low mg.

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Great Supplemental Drug

Posted by Reviewer1579425 on Jul 04, 2010

I love using this product as a way to adjust my dosage of L-Tyrosine intake. I use this product to supplement the medicine for my hypothyroid condition. The recommended dosage of one pill is not quite enough for my body's needs. I like adding it to my daily routine when I have a need for more than normal. - Dallasite

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Roger said

Posted by Reviewer1730617 on Mar 25, 2009

Good stuff .. fast service

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b strange

Posted by Reviewer2930255 on Feb 10, 2009

very good, gives my thyroid a boost

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